Stone-planer.



Hm 807,780. PATENTED DEC. 19, 1905.

c. G. ROSS.

STONE PLANER.

APPLICATION FILED AUG. 5. 1905.

' 2 SEEBTS-QHBET 1. 25 6 6 l 6 [NVENTOR I Attorney PATENTED DEC. 19, 1905.

C. G. ROSS.

STONE PLANER.

APPLICATION FILED AUG. 5, 1905.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

OORNELE Gr. ROSS, OF RUTLAND, VERMONT, ASSIGNOR TO THE LINCOLN IRON WVORKS, OF RUTLAND, VERMONT, A CORPORATION OF VERMONT.

STONE-PLANER- Specification of Letters Patent.

Patented Dec. 19, 1 905.

To all whom it may concern.-

Be it known that I, OoRNELE G. Ross, a citizen of the United States, residing at Rutland, in the county of Rutland, State of Vermont, have invented certain new and useful Improvements in Stone-Planers, of which the following is a specification, reference be-- ing had therein to the accompanying drawings.

This invention relates to stone-planers, and particularly to a machine adapted for scabbling or dressing blocks of stone as taken from the quarry.

An object of the invention is to provide an improved construction andarrangement of parts for su porting the cutting-tools in a plane eXten ing diagonally to the path of travel of the platen of the machine, so as to secure a shearing cut across the block carried by the platen, thus tending to hold the same down and to prevent chipping or breaking away of the edges of the block as the cutters pass beyond the same.

A further object of the invention is to provide an improved construction and arrangement of the cutter-holders whereby they may be readily adjusted toward and from the work and the tools retained therein in the most desirable manner to 1 permit the use of a series of cutting-knives o a higher grade of steel and lighter in weight than the usual forged tools.

Other objects and advantages of the invention will be hereinafter set forth and the novel features thereof defined in the appended claims.

In the drawin s, Figure 1 is a perspective view of the mec e. Fig. 2 is a front elevation of the tool-holders and adjusting means. Fig. 3 is an enlarged detail section of the reversing-feed for these holders. Fig. 4 is a diagram illustrating the out upon the block. Fig. 5 is a plan of the base of the tool-holder. Fig. 6 is a similar view of the holder assembled upon the adjusting-plates. Fig. 7 is a section on line 7 7, Fig. 2, on an enlarged scale. Fig. 8 is a detail cross-section through the assembled tool-holder; and Fig. 9 is a plan of the clamping-plate of this holder. Like letters of reference refer to like parts in the several figures of the drawings.

The letter A designates the base of the machine, which may be of any desired character, and provided with a platen or table A,

mounted to travel longitudinally thereon and driven by any usual means suitable for the purpose. This platen is also provided with the ordinary work-holder A which is adjusted into proper contact with the blocks to be planed or dressed by the machine. At opposite sides of the machine posts or stand ar s B are provided and formed of suitable configuration to support the cutting-tools and resist the'strain exerted thereon. These posts are provided at the front faces with the flange or plate B, disposed diagonally to a vertical line and also diagonally to the path of travel of the platen, so as to produce a shearing cut across the block of stone or other material thereon, as shown by the diagram in Fig. 4. These faces may be disposed at any desired angle relative to the platen, preferably that herein shown, which in the resistance of the stone to the cutter produces a downward pressure, effectually holding the stone in position on the laten and beginning the out at one corner of the stone and gradually increasing the cutting area, so as not to break or split the corners of the stone as the cutter passes on or off the same.

These posts are preferably connected at the upper ends by the bridge bar or plate B, and upon the diagonally-disposed plates B a bearing-plate B is mounted and secured in any desired mannerfor instance, by bolts or screws B. This plate is provided upon its face with ribs or ways B preferably dovetailed, as shownin Fi 7, and adapted to seat in similar rooves formed in the adjustable platesIB. These adjustable plates are rovided upon their inner faces with the fixed nuts B adapted to receive the adjusting-screw B which is'rotatably mounted at B in the plate B and preferably disposed intermediate of the ribs B thereon. These adjustable plates, carrying the tool-holders, may be operated in any desired manner, but preferably by the means shown in Figs. 2 and 3, wherein the adjusting-screws B are each provided with a drivingear O, adapted to mesh with a corresponding ear O, carried upon the vertically-disposed drivin -shaft C the upper end of which is adapted to be driven by the power-shaft 0 carrying the pulley C", by means of the clutch connection shown in Fig. 3, which is preferably inclosed in the casing C This connection comprises an opposite cone member O", slidingly secured or splined upon the shaft C and adapted to cooperate at its lower end with a bevelpinion C having a friction-seat C in its upper face to engage the cone of the clutch and ein normally in mesh with the bevel-pin ion 5 carried by the power-shaft G which extends laterally of the machine above the cutters thereon. A reversing gear or pinion is loosely mounted upon the upper end of the shaft C and normally intermeshes with the gear C". This reversing gear is provided with a seat D. in its face, adapted to receive the other cone-face of the clutch member C when the same is shifted into contact therewith. This shifting is accomplished by means of an angle-lever D pivotally mounted at D and having its arm D extending within the casing and provided with projections D entering the groove D of the clutch member C. The lower end of this lever D is provided with a handle D by which it may be operated. These handles are duplicated on opposite sides of the machine in order that each operator may control the cuts on his side of the machine, as, owing to the height of the stone upon the platen, the operator upon one side cannot ordinarily observe the holders or the cutters upon the opposite side of the stone. It will be seen that the shifting of the clutch in one position will move the cutters up to the stone, while an intermediate position thereof stops the adjustment of the cutters, and the opposite extreme of movement of the clutch quickly withdraws the cutters, which is necessary when a return movement of the machine is desired, as the tool-holder is rigidly mounted upon the posts. For the purpose of effecting minor adjustments the shaft of the lower adjusting-screw may be continued outward and provided with a hand-wheel D as shown in Figs. 1

and 2.

The improved form of tool-holder consists of a base-plate E, having an inclined upper surface E, as shown in Fig. 8, adapted to receive the cutter E This base-plate is secured to the adjusting-plate B by means of the screws E (shown in dotted lines in Fig. 8,)extending through the countersunk apertures E, and also by means of apertured lugs E at the rear of the base, adapted to receive securing-screws E For the purpose of securing additional bearing-surface and even adjustment the adj usting-plates are arranged in series-for instance, three, as herein shownand the base of the tool-holder is a continuous piece extending over these series. The tools or cutters E are preferably also formed in series, three being herein shown, and are secured in position by means of the clamping-plates E two being herein used in order to overlap the joints between the cutters E and these plates E are held in position by means of the securing bolts or screws E ex tending therefrom into the base, apertures E being provided therein for that purpose. For the purpose of adjusting the cutters E into proper alinement with each other threaded apertures areprovided in the rear base-plate E to receive adjusting-screws E, which bear against the opposite ends of the cutters.

In the operation of this machine the block of stone to be scabbled or dressed is carried by the platen into contact with the cutters supported upon the. diagonal faces of the posts and a shearing cut secured thereon, as shown by the diagram in Fig. 4. This form of cut offers the least resistance to the tool and prevents chipping or injury to the block, while the resultant cutting strain is partly taken up by the downward pressure of the block upon the platen. The dressing of blocks of limestone and similar material for shipment in this manner is very important, as it obviates the necessity of making the usual allowance in size for hand-scabbling, which materially increases the size of the block and effects both the space required for shipment and the cost thereof, as the scabbling performed by a machine of this character requires only the allowance of one-half an inch for each finished surface, and by a machine of the character described blocks of stone for bridge or foundation work can be simultaneously dressed upon two sides, thus effecting an economy in the time and cost of such dressing. The form of tool-holder shown permits the adjustment of the tools for the full height of the machine by power means and their immediate withdrawal in the reversal of the platen. The form of toolholder also permits the use of separate outting-knives, thus saving the forging of the tools, and permits the use of a higher grade of steel and lighter weight thereof, as the cutting-tool is clamped in position and adapted to be adjusted in its holder by the means hereinbefore described.

Having described my invention and set forth its merits, what I claim, and desire to cover by Letters Patent, is

1. In a machine of the class described, a base, a platen traveling thereon, and a post inclined diagonally to the plane of said platen and adapted to support a tool at a similar inclination to that of the post. 7

2. In a machine of the ,class described, a base, a platen traveling thereon, a verticallydisposed post inclined diagonally to the plane of said platen, a tool-holder upon said post, and'means for adjusting said tool-holder laterally on said post.

3. In a machine of the class described, a base, a traveling platen mounted thereon a post provided with a ribbed support, a series of lates slidably mounted upon said ribs, a too l-holder carried by said series of plates, and adjusting-screws connected to simultaneously shift the plates of said series.

4. In a machine of the class described, a

base, a traveling platen mounted thereon, posts provided at opposite sides thereof, a series of plates slidably mounted upon each of said posts, tool-holders carried by each of said plates, adjusting-screws connected to simultaneously shift the plates of each series, and means for simultaneously shifting both series of holders toward and from each other.

5. In a machine of the class described, a base, a traveling platen disposed thereon, a vertically-disposed post at one side of said platen and having a face inclined outwardly forward from the plane of the platen, and a tool-holder mounted upon said face.

6. In a machine of the class described, a base, a traveling platen mounted thereon, a post provided with a ribbed support, plates slidingly mounted upon said ribs, a toolholder carried by said plates, adj Listing-screws for said plates, a driving-shaft geared to each of said adjusting-screws, and a power-shaft geared to said driving-shaft.

7. In a machine of the class described, a base, a traveling platen mounted thereon, a post provided with a ribbed support, plates slidingly mounted upon said ribs, a toolholdercarriedbysaid plates, adjusting-screws for said plates, a driving shaft geared to each of said adjusting-screws, a power-shaft geared to said driving-shaft, and a reversing mechanism disposed between said powershaft and driving-shaft.

8. In a machine of the class described,-a base, a traveling platen mounted thereon, a post provided with a ribbed support, plates slidingly mounted upon said ribs, a toolholder carried bysaid plates, adj usting-screws for said plates, a driving shaft geared to each of said adjusting-screws, a power-shaft geared to said driving-shaft, gears loosely mounted upon the upper end of the drivingshaft and meshing with a gear upon the power-shaft, and a reversing-clutch secured to said driving-shaft and adapted to engage either of said gears.

9. In a machine of the class described, a post, a tool-holder mounted thereon comprising a base-plate, a series of abutting cutterblades resting upon an inclined face of said base-plate, a plurality of clamping-plates dis- .posed upon said cutters with their meetingjoint intermediate of the ends of a blade, and securing-bolts eXtendin through said clamping-plates and threaded into the base-plate at the rear of said blades.

10. In a machine of the class described, a

base, a platen mounted to travel thereon,-

posts disposed at opposite sides of the base and provided with forwardly-inclined faces extending diagonally to the plane of the platen, adjustable plates mounted upon each of said posts to extend inwardly therefrom, means for independently o crating said plates in either direction, an tool-holders carried by each of said lates.

In testimony whereof I affix my signature in presence of two witnesses.

CORNELE G. ROSS.

Witnesses A. O. MARsHALL,

FAYETTE L. VAUGHAN. 

